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Analysis and design of a 1.8–2.7 GHz tunable 8-band TDD LTE receiver front-end

Wang Xiao, Wang Yuji, Wang Weiwei, Chang Xuegui, Yan Na, Tan Xi and Min Hao

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Abstract: This paper describes the analysis and design of a 0.13 μm CMOS tunable receiver front-end that supports 8 TDD LTE bands, covering the 1.8–2.7 GHz frequency band and supporting the 5/10/15/20 MHz bandwidth and QPSK/16QAM/64QAM modulation schemes. The novel zero-IF receiver core consists of a tunable narrowband variable gain low-noise amplifier (LNA), a current commutating passive down-conversion mixer with a 2nd order low pass trans-impedance amplifier, an LO divider, a rough gain step variable gain pre-amplifier, a tunable 4th order Chebyshev channel select active-RC low pass filter with cutoff frequency calibration circuit and a fine gain step variable gain amplifier. The LNA can be tuned by reconfiguring the output parallel LC tank to the responding frequency band, eliminating the fixed center frequency multiple LNA array for a multi-mode receiver. The large various gain range and bandwidth of the analog baseband can also be tuned by digital configuration to satisfy the specification requirement of various bandwidth and modulation schemes. The test chip is implemented in an SMIC 0.13 μm 1P8M CMOS process. The full receiver achieves 4.6 dB NF, –14.5 dBm out of band IIP3, 30–94 dB gain range and consumes 54 mA with a 1.2 V power supply.

Key words: long-term evolution

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    Received: 18 August 2015 Revised: 07 December 2010 Online: Published: 01 May 2011

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      Wang Xiao, Wang Yuji, Wang Weiwei, Chang Xuegui, Yan Na, Tan Xi, Min Hao. Analysis and design of a 1.8–2.7 GHz tunable 8-band TDD LTE receiver front-end[J]. Journal of Semiconductors, 2011, 32(5): 055006. doi: 10.1088/1674-4926/32/5/055006 Wang X, Wang Y J, Wang W W, Chang X G, Yan N, Tan X, Min H. Analysis and design of a 1.8–2.7 GHz tunable 8-band TDD LTE receiver front-end[J]. J. Semicond., 2011, 32(5): 055006. doi: 10.1088/1674-4926/32/5/055006.Export: BibTex EndNote
      Citation:
      Wang Xiao, Wang Yuji, Wang Weiwei, Chang Xuegui, Yan Na, Tan Xi, Min Hao. Analysis and design of a 1.8–2.7 GHz tunable 8-band TDD LTE receiver front-end[J]. Journal of Semiconductors, 2011, 32(5): 055006. doi: 10.1088/1674-4926/32/5/055006

      Wang X, Wang Y J, Wang W W, Chang X G, Yan N, Tan X, Min H. Analysis and design of a 1.8–2.7 GHz tunable 8-band TDD LTE receiver front-end[J]. J. Semicond., 2011, 32(5): 055006. doi: 10.1088/1674-4926/32/5/055006.
      Export: BibTex EndNote

      Analysis and design of a 1.8–2.7 GHz tunable 8-band TDD LTE receiver front-end

      doi: 10.1088/1674-4926/32/5/055006
      • Received Date: 2015-08-18
      • Accepted Date: 2010-10-21
      • Revised Date: 2010-12-07
      • Published Date: 2011-04-21

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